Bake-oven.



Patented July l0, I900. P. VETTEEL.

BAKE'UVEN.

(Application filed Oct. 4, 1 899.1

2 Sheets-Sheet (No Model.)

Tm: Noam: PzIzRa co. PHUTO-LITNO., wnsumumn, nfc.

N0.v 653,272. Patented July 10, I900.-

P. VE'TTER.

BAKE OVEN:

(Application filed Oct. 4, 1899.)

2 Sheets-Sheet 2 & t

(No Model.)

m: Numus PETERS 00., PHOTD-LITHQ. wnsumsmn, D. c.

* TED STATE PATENT OFFICE.

'PHILIP VETTER, or SPRINGFIELD, 01110.,

BAKE-OVEN.

SPECIFICATION forming part of Letters Patent No. 653,272, dated July 10, 1900.

Application filed October 4., 1899';

To all whom it may concern:

Be it known that I, PHILIP Vnrrnn, aciti zen of the United States, residing at Springfield, in the county of Clark and State of Ohio, have invented certain new and useful Improvements in Bake-Ovens, of which the following is a specification, reference being had.

is accomplished by providing fines separated from each other and forming the bottom of the oven, while thereturn-flue to the chim ney is of such size that the heated gases are held in contact with the upper partition of the oven a sufficient length of time to thor oughly heat such partition.

My invention also relates to details of construction and arrangement hereinafter apvpearing and more particularly pointed out in the claims.

In the accompanying drawings, on which like reference letters and figures indicate corresponding parts, Figure l is an end elevation of my improved oven; Fig. 2, a partial sectional View on the linemc of Fig. 1, sho v ing the sliding dampers for opening and closing the direct draft; Fig. 3, a horizontal sectional view on the line 3 y of' Fig. 1 looking in the direction of the arrows; Fig. 4, a cross: sectional view on the line 2 z of Fig. 3; Fig. 5, a detail view of one of the dampers, together with its connections for operating it. Fig. 6 represents detail views of windows through which light is reflected into the oven; and Fig. 7, a detail View of the mica-holder for one of said windows, partly in section.

In baking bread quickly and economically the heat within the oven must be as nearly uniform as it is possible to get it, and at the same time the construction I must be such that the largest number of heat units will be utilized in heating'the oven. All this I have accomplished in a marked degree and am able to turn out very large bakings, while at the same time the cost of such bakings is mate- Serial No. 732,453. No model.)

rially lessened by the construction about to be described.

The letter A represents the fire-box, while the letter B represents the ash-box, the usual.

which extend rearwardly and upwardly from the fire-box, as illustrated in Fig. 3. The walls E of these fines may be formed of firebrick or any other suitable material. By referring to Figs. 1, 2, and 4 it will be observed of them which opens directly into the oven.-

The upper walls of the fines, as also the arch G of the fire-box, form the bottom of the oven, and inasmuch as the flues D are separated from each other the greatest amount of heat is radiated therefrom, since it may be radiated from three sides, and, besides this, there is no intermediate wall or partition for absorbing the heat between the flues and oven proper, H. It Will be seen that the fines D open into the vertical fine I, such flue being closed by slide-dampers J, as seen in Figs. 2 and 3. Below the dampers and extending the entire length and width of the oven is formed a fine K. Thus when the dampers J are closed the heat passes from the vertical flue I into the horizontal flue K, immediately above the oven proper, and consequently the heat completely surrounds the oven on three sides. In order that the heat in the passage Kmaybe somewhat retarded, so that the oven proper will take up'all of the heat units possible for it to take up, I provide a return-fine L of smaller dimensions than the'fiue K, yet at the same timesufficiently large to give the required draft.

t It will be observed that within the oven is formed. a track M, upon which is-mounted a truck 0. The side rails of the truck are preferably formed ofangle-ironP and are united I bracket is upturned, as shown at T, to form a stop for the truck to limit its outward movement, as will presently appear.

Referring now to Fig. 1, it will be observed that the ash-box is provided with a door U and the fire-box with a door V, while to the right and left of the fire-door doors a are provided for cleaning the flues D, located on either side of the oven, the tines immediately in front being cleaned through the door V. A slide-door b is provided, which is adapted to close the opening leading into the oven proper. To the upper end of this door are connected ropes or cables 0, which pass over pulleys d and are secured at their ends to a weight 6. This weight is provided with an extension f, which is large enough to receive a foot of a person to press the weight downward, and consequently raise the slide-door b. It will be understood, of course, that the slide-door is mounted in guides g. In order that the weight a may be elevated to permit the door to close the opening of the oven proper, I provide a pulley h, over which passes a rope 2', connected at one end to the weight e and at its other end carrying a stirrup j.

By placing the foot of the operator in this stirrup the weight 6 maybe readily elevated, thereby permitting the door I) to descend to closing position. The truck 0 is supported at its inner end by the roller 7c and at its outer end by'a roller Z, mounted on the lower end of the leg m. This rollerz' is adapted to run von a track 0, carried upon the floor of the-room in which the oven is located or in any other convenient manner. As the truck is drawn outward after raising the door I) the truck-rollers 7a are adapted to come in contact with the upturned ends T of the bracket When the truck is in this position, it will be understood that it is entirely outside of the oven proper, and conseqently the door I; may be lowered to entirely close the opening of such oven proper. From Fig. 1 it will be seen that the doorb is out out, as shown at p, to clear ?what I claim as new, and desire to secure by Letters Patent, is-- of the truck, so that the door b may readily I I oven proper, of a fire-box located immediately ibeneath the forward portion of said oven proper, flues adapted to connect with said f firebox having spaces between them, said I fiues also forming a portion of the bottom of said oven proper, means for conducting the iheat around the rear end and over the top of 1 said oven proper, means for conducting a portion of the products of combustion from the fire-box around the forward end of said oven proper, and a return-flue adapted to retard the products of combustion and hold them longer within the passages or flues surround- 'ing the oven pr oper,,whereby the oven will take up a larger number of heat units, all sub- 7 stantially as shown and described.

tending through the front partition and hav- 1 thetruck-rails P, it being understood that there is no slab adjacent to the forward end fit over the truck-rails and substantially close the entrance to the oven proper. Thus when the truck is removed ready for refilling the oven is not losing heat. In order to more thoroughly heat the forward end of the oven proper, I provide upflues q, as shown in dotted lines in Figs. 1 and 3. These flues connect with the fire-box A and conduct a portion of the heat directly about the forward end of the oven proper. In order to regulate the amount of heat pass ing up these flues, dampers r are provided, which are operated by the handles 8. Opposite the flues K and L are doors tfor the purpose of cleaning such flues. The sliding dampers' J are operated by rods 2, such rods exing their outer ends bent to form handles 3 for more readily operating them.

heat-gage such as shown at 12.

I will now refer to the manner inwhich the temperature in the oven proper is determined and also the manner in which the oven proper is lighted, so that the bakermay determine whether the bread, &c., is sufficiently baked without the necessity of removing the truck totest the bread. By referring to Fig. lit will be observed that I have provided openings in the front plate, as shown at 4. A frame structure such as shown at 5 in Figs. 6

" and 7 is adapted to be placed within the opening 4, and within the frame structure is fitted a sheet of mica or other suitable material which will permit light to pass into the oven and at the same time will prevent theheat from passing out. The frame structure 5, it will be observed, is setback on a ledge 6' and against a projection 7. The projection Facts as a stop for the frame 5, while the ledge 6 supports a light. openings light the interior of the oven, so that the condition of the baking may be observed through the peek-hole 8, such peek-hole being covered with a sheet of mica 9, held in position by a plate 10, screwed or otherwise secured to the front of the oven, as shown at 11. Thus we have seen that with my improved construction I am enabled to use the greater portion of heat units by reason of the lower flues D being separated from each other and Not only proportion possible of the heat units is util- ;ized for heating the oven proper instead of passing up thechim'ney. 13y referring to Figs. 1 and 3 it will be observed thatIuse a This gage is of any ordinary or approved construction and is adapted to indicate the temperature of the interior of the oven proper.

Having thus fully described. my invention,

1. In a bake-oven, the combinationwithan 2. In an oven, the combination with an oven proper, of separated flues having spaces be tween them forming the bottom of said oven,

(Not shown.) Thesetwo means forcommunicating with said separated flues to conduct the products of combustion about one end of said oven proper and another flue above said oven and parallel therewith, a return-flue of smaller diameter than said latter flue and communicating therewith, substantially as shown and described.

3. In a bake-oven, the combination with an oven proper, adapted to extend from the forward end to near the rear end thereof, of a fire-box beneath said forward end and forming a portion of the bottom of said oven, flues for communicating with said fire-box, and separated from each other and having a space between them and also forming a portion of the bottom of said oven, another flue communicating with said separated fines between the rear end of the oven proper and the outer wall, a pair of flues above said oven proper, one of which communicates with said end flue and conducts the products of combustion to the forward end of said oven proper immediately above it, while the other flue is of smaller area and is adapted to act as a return-flue for said products of combustion, and one or more dampers located in said end flue adapted to open and close the passage therein, whereby a direct draft or indirect draft may be had, all substantially as shown and described.

In testimony whereof I affix my signature in presence of two witnesses.

PHILIP VETTER.

Witnesses:

B. B. ESTERLINELII W. M. MCNAIR. 

